Sure we’ve seen Kim Kardashian show her sexy side in everything from Twitter pics to fast-food commercials, but the reality superstar sent a private batch of racy photos to Kanye West while they were secretly hooking up while in separate relationships, Kanye’s ex Amber Rose tells this week’s Star magazine exclusively.

“She was sending pictures, and I was like, ‘Kim, just stop. Don’t be that person,’” Rose told Star exclusively, adding that Kim — who was dating NFL running back Reggie Bush at the time — never acknowledged her warning shot.

“I thought at least she’d be woman enough to respond to me,” the short-haired socialite told Star. “She never responded.”

Rose, who tweeted a link to the story on her account @darealamberrose Thursday — explained she took Kim’s silence as a betrayal not just personally, but as an affront to the sisterhood of women as a whole.

“It’s very important that us women stick together and we don’t f**k each other over like that,” Rose told Star.

To find out more of this sizzling story, pick up the latest issue of Star magazine — on newsstands now.